package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private DishService dishService;

    @Autowired
    private DishMapper dishMapper;
    //private DishService dishService;

    /**
     * 新增菜品 同时保存对应的口味数据
     * @param dishDto
     */
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基表信息到菜品表dish
        this.save(dishDto);

        Long dishId = dishDto.getId();//菜品id
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item)->{
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());

        //保存菜品口味数据到菜品口味表
        dishFlavorService.saveBatch(flavors);

    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息 从dish表中查
        Dish dish = this.getById(id);

        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        //查询当前菜品对应的口味信息，dish_flavor查
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);


        return dishDto;
    }

    /**
     * 修改菜品 包含菜品口味表和菜品表
     * @param dishDto
     */
   @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表的信息
        this.updateById(dishDto);

        //清理当前菜品对应口味数据dish_flavor
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(queryWrapper);

        //添加当前提交过来的口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        //上述会少dishId这个字段，添加字段数据
        flavors = flavors.stream().map((item)->{
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }


    /**
     * 修改菜品中起售和停售的状态
     * @param ids
     * @param status
     */
    public void updateStatus(List<String> ids, Integer status) {
        List<Dish> list = new ArrayList<>();
        for (String id : ids) {
            Dish dish = dishService.getById(id);
            dish.setStatus(status);
            list.add(dish);
        }
        dishService.updateBatchById(list);
    }

    /**
     * 删除菜品后，修改缓存里的数据
     * @param ids
     * @return
     */
    @Override
    public List<String> getCategoryByIds(List<String> ids) {


        return dishMapper.getCategoryByIds(ids);
    }


}
